Type-casting mold.



PATBNTBD APR. 14.1903. l P. G. NUERNBBRGBR a. G. RBTT'IG, JR.

TAYPE CASTING MOLD. APPLIUATION FILED Dno.ao,19o5.

2 SHEETS-SHEET 1.

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' lPJI'ENTED APR. 14, 1908.'

PPLIGATION TI-LED.DEO.30,1905

/2 R30 Illu /g TYPE CASTING MOLD.

' P. G. NUERNBERGER & G. RETTIG, Jn.

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o /5 11ml f 2. pov c UNITED STATES PATENT OFFICE.

PIIILIP G. NUERNBERGER AND GEORGE RETTIG, JR., OF CHICAGO, ILLINOIS, ASSIGNORS TO UNIVERSAL AUTOMATIC TYPEVASIING MACHINE COMPANY, OF CHICAGO, ILLINOIS, A

CORPORATION OF ILLINOIS.

TYPE-CASTING MOLD.

Specification of Letters Patent.

Patented Aprn 14, 1908.

Application led December 3U, 1905. Serial No. 294,016.

To all whom it may concern.'

Be it known that we, PHILIP G. NUERNBER- GER and GEORGE RETTIG, J r., citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have inf vented new and useful Improvements in Type-Casting Molds, of which the following is a specification.

This invention relates to improvements in molds for castinfr ty e and has for its object to provide a moId o this character embracing features providing for the casting of finished ty e ready for practical use when dropped rom the molds.

The object is the same as that set forth in pending applications Nos. 256,930 and 260,581, but differentiates with reference to the location ofthe breaking-ofi junction of the type and jet in the operation of casting. In the applications referred to, the type-body is provided in the base with agroove or depression in the operation of casting and the junction of the type and jet located in the bottom of such groove. In this instance the l'ocation of the junction of the type and jet is at one side or edge of the type-body so that when the jet is broken away a smooth level base or foot is provided for the type to stand on.

In the drawing, Figure 1 is a front elevation showing the mold members in their closed position. Fig. 2 is a similar view partly open, the dotted lines indicating the wide 'open osition. Fig. 3 is a rear side elevation of t e mold closed. Fig. 3a is a side elevation of a detached detail. Fig. 4 is a view in perspective of a ty e-body the jet or sprue being shown attache thereto. Fig. 4a is a view in perspective of a type-body, the jet being removed. Fig. 5 is an o cned out View of the upper movable mol -member lookin at the inside. Fig. 6 is a similar view o? the lower stationary member. Fig. 7 is a transverse section on line 7 Figs. 1, 5 and 6, looking in the direction indicated by the arrow. Fig. 8 is a transverse section on line 8, Figs. 1, 5 and 6. Fig. 9 is an exa gerated transverse section of a portion of tIie mold parts. Fig. 10 is a view 1n perspective ofthe upper jetart or member. Fig. 11 is a similar view o the lowerjet-part.

In the pending applications herein referred to the jet-parts or members have a movable action in breaking off the jet. In this instance the jet-parts are stationary, the jet being. broken off in the usual manner common to the operation of ty e-castin machines.

A represents the ower mo d-memb'er, B the upper moldemember, C the bottom moldplate and D the top mold-plate, to which the respective mold-members are secured.

The lower j et-part 12 is rigidly secured to the corresponding mold plate C. The inner upper corner of this jet part extends above the level of the adjacent wall of the lower mold carriage-part 13 and is provided with a beveled edge 14, as shown in Figs. 7, 8, 9, 10 and 11. The upper 'et-part 15 is rigidly secured to the top mold-plate D and is of a less width than the lower jetpart 12 and formsan ofiset a, that is, bringing the vertical line of the inside wall oi the upper jet-part back of the vertical line of the lower e-t-part, as best shown in Fig. 9. The lower inner corner of the upperjet-part 1 5, is provided with a proj ected li -edge 16 which comes on a dia onal line wit the beveled edge 14 of the ower jet-part and forms a tight oint between the adjacent joining surfaces, as best shown in Figs. 7, 8 and 9. n

A compensating or division plate 17 is inserted between the upper jet-part and the corres onding body and carriage parts in the upper alf of the mold. This plate is of the contour shown in Fig. 3a, and 1s provided in the lower ed e adjacent to one end with a notch 18, antI in the opposite end with a slot 19. A art of the plate starting in from the lower e ge and one end, is out away and provides a shoulder 20 on the junction line of the carriage and body parts of the mold.y

The screw 21 extends through far enough to loosely engage the slot 19 in the plate, as shown in Fig. 3 and indicated by dotted lines in Fig. 5. The inner end of screw 21 also threads in the guide 22. This permits of the usual adjustment of the upper mold-member without imparting a corresponding endwise movement to the plate 17. A plate 23 (Fig. 3) is rigidly secured to the lower mold member and is provided with a beveled lug 24 corresponding in shape to 4and loosely engaging the V-shaped notch 18 in the lower edge of the plate 17 when the mold is in its closed position, as best shown in Fig. 3. By this arrangement the plate will always close with the mold to its proper castin position after each opening movement oi t e mold in dischargin the type. VThat is, when the mold closes t e notch 1.8 in the plate engages the beveled lug 24 with a drawing action so that when the mold is closed the shoulder edge 2() onthe plate always comes even on a vertical line with the corresponding wall of the ty )ecasting chamber 25. The plate 17 is beveled or sharpened on the lower edge as at l), to conform to the beveled edge 14 of the lower jet-part for the purpose of forming a tight joint and prevent leakage of the molten metal in the operation of casting. The difference between the inner wall edges of the jet-parts on a straight vertical line is approximately less than that of the thickness of the plate 17. This diiierence provides the off-set a of the type casting chamber. The ingate passage 26 through which `the molten metal is injected gradually contracts to a small slit and opens into the type-chamber just below the of-set so that the metal will iiow in back and form the foot or base 27 on the type 28, above the contracted orifice 26, the .area of which is approximately equal to that of the beveled edge 29 formed on the footof the type at one side and in line with the injecting orifice or passage 26; the beveled edge 29 corresponding to the beveled edge 14 on the lower jet-part. By this arrangement the junction of the type and sprue is on the beveled edge 29 and the line ofsep'aration above or away from the foot of the type and provides the same with a smooth finished base. to stand on when discharged from the mold.

The lower mold-member is provided in the ingate passagle with a recess 30 into which a ortion of t orms a tongue 31 (Fig. 4) on the sprue and Aprrovides the means for breaking oit the same om the type as the mold opens. The type e metal charge will flow and' is dislodged from the upper mold-member by coming in contact with the stool 32.

Having thus described our invention, what I we claim is:

1. In a type casting-mold, the Inoldmen1 bers, the jet-parts having their inner edges in different planes, and means inserted between the upper jet-part and mold to prevent leakage in the operation of casting.

2. In a type casting-mold, the jet-parts having their inner edges in dili'erent planes, one of the said jet-parts being rovided with a beveled corner edge and tllieother part with an inclined lip-edge adapted to overlap said beveled corner edge when the mold is closed, and a plate inserted between the u per jet-part and the carria e part of the mo d aving its lower edge beve ed, and means for retaining said plate in its proper working position.

3. In a type casting-mold, the lower etpart having its inner. wall edge extending above that of the adjacent carriage-part, the

upper jet-part having the vertical lme of its inner edge back of the inner edge of the lower jet-part, and means inserted between the upper jetpart and the corres onding carriagepart in compensating for the relative dille-rent widths of the jet-parts.

4i In a type castinmold, a lower jet part anu er jet-part aving its inner wall edge on a me back of the corres onding wall of the lower jet-part, a division Ilate inserted between the upper jet-part an the adjacent carriage-part and means for retaining said plate in its working position.

In testimony whereof we affix our signatures, in presence of two subscribing witnesses.

PHILIP G. NUERNBERGER. GEORGE RETTIG, JR.

Witnesses: i

L. B. COUPLAND, J. B. DoNALsoN. 

